EP 0546400 A3 19930901 - A PROCESS FOR PREPARING POLYAMINES AND POLYISOCYANATES
Title (en)
A PROCESS FOR PREPARING POLYAMINES AND POLYISOCYANATES
Publication
Application
Priority
US 80540091 A 19911210
Abstract (en)
[origin: EP0546400A2] Disclosed herein is an improved process for preparing a polyamine mixture derived by reacting aniline with formaldehyde in the presence of an acid catalyst the improvement comprising mildly reducing the polyamine mixture by a process step comprising catalytically or chemically hydrogenating the polyamine mixture in the presence of a metal catalyst.
IPC 1-7
IPC 8 full level
C08G 12/08 (2006.01); C07C 263/10 (2006.01); C08G 18/76 (2006.01); C08G 73/02 (2006.01); C08G 101/00 (2006.01)
CPC (source: EP)
C07C 263/10 (2013.01); C08G 18/7664 (2013.01); C08G 73/0266 (2013.01)
C-Set (source: EP)
Citation (search report)
- [AD] EP 0283757 A1 19880928 - DOW CHEMICAL CO [US]
- [AD] EP 0114970 B1 19901205
Designated contracting state (EPC)
BE DE ES FR GB IT NL PT
DOCDB simple family (publication)
EP 0546400 A2 19930616; EP 0546400 A3 19930901; EP 0546400 B1 19960814; BR 9204955 A 19930615; CA 2084156 A1 19930611; DE 69212782 D1 19960919; DE 69212782 T2 19961219; ES 2090464 T3 19961016; JP H05320296 A 19931203; KR 930012847 A 19930721
DOCDB simple family (application)
EP 92120306 A 19921127; BR 9204955 A 19921209; CA 2084156 A 19921130; DE 69212782 T 19921127; ES 92120306 T 19921127; JP 35141092 A 19921208; KR 920023553 A 19921208